Object name: NGC5943

Designation(s): NGC5943, NGC5934, NGC5935, NGC5945, NGC5947,

This field contains 4 NGC galaxies, all either interacting or distorted by past interactions plus a 5th rather normal one. The field is located in northeastern Bootes. All are likely members of the same local group about a quarter billion light-years distant by redshift measurement. One or two "lesser" members of the group are in the field as well.

NGC 5934 and NGC 5935 are an obvious pair of interacting galaxies. Both have plumes drawn out of them by the interaction. NGC 5934 is listed as a spiral of questionable classification. NGC 5935 is listed as S? as well by the NGC Project but NED leaves off the question mark. To me, they both look odd. I wouldn't argue with NGC 5935 being S0 but 5934 looks unquestionably spiral to me. Maybe they mean they can't decide what type of spiral it is, barred or not barred. Below the pair is KISSR 1955 a starburst galaxy with a faint outer halo. Starburst activity can be triggered by interaction with another galaxy but this isn't necessary.

NGC 5945 is a nice face on barred spiral whose arms overlap making a pseudo-ring. Besides these rings, there are two outer arm segments that see to make huge "ears" on the east and west sides of the galaxy. Inside the ring on the west side is a "bright" object listed as SDSS J152943.21+425511.2, a star and [BFW2006] J232.42996+42.91977 a galaxy. So is it a star or a galaxy. Its distance measurement is about the same as NGC 5945 but it is a friend of a friend estimate rather than spectroscopically determined. So is it a star or a galaxy? Of NED's 5 entries for this object 4 call it a galaxy. While it is hard to measure the PSF of an object on top of another what I am seeing is identical to a star of similar magnitude in the image. That would indicate it is quite small in angular size, more like a star than a galaxy but if this is all that's left of the core of a cannibalized galaxy. That might explain the "ears".

The main target of my interest in taking this field, however, is NGC 5943. This galaxy is very fuzzy with large plumes. I didn't realize how large when I took this image or I'd have put a lot more time into it (weather willing which likely would not have allowed it). Faintly seen in my image are two huge plumes going to the northwest and southeast. It too has a near starlike companion, ASK 245539.0. Though its PSF is very galaxy like so easy to confirm it is a galaxy. Usually, plumes like those seen in 5943 are due to a merger. In this case, it might be that the companion is still in the process of merging. Note the brightest part of the plume leads nearly to ASK 245539.0. Unfortunately, I find no papers on either NGC 5943 or NGC 5945.

The ordinary looking NGC galaxy, NGC 5947 is a rather pretty face on barred spiral with many arm segments. I didn't think about it when picking the center coordinates for the image as I was thinking only of the other 4. This resulted in it being chopped off on the eastern side. The other nice spiral in the image is CGCG 222-012. Smaller than NGC 5947 and tilted at a rather steep angle it is difficult to see its structure. While no bar is seen nor is it classified as a barred spiral the arms I see seem to start well out from the core as if coming from the ends of an unseen bar. It too appears to be a member of the same group as the others. Several more are out of the field.

NGC 4934, NGC 4935 and NGC 4945 were discovered by Édouard Stephan on June 12, 1880. He found NGC 4943 and NGC 5947 on June 18, 1880.

Unfortunately, seeing was very poor for this image. There's a lot of fine detail in all of these galaxies I failed to pick up due to the seeing. I hope to try again for it if the weather ever permits. This isn't representative of the field I'm sorry to say.

14" LX200R @ f/10, L=4x10' RGB=2x10', STL-11000XM, Paramount ME

Related Designation(s):

10C J152812+425548, 10C J152817+425640, 2MASS J15281275+4255472, 2MASS J15281672+4256386, 2MASS J15294412+4246405, 2MASS J15294500+4255071, 2MASS J15303659+4243016, 2MASX J15281276+4255474, 2MASX J15281667+4256384, 2MASX J15294409+4246404, 2MASX J15294500+4255073, 2MASX J15303656+4243018, 2MASXi J1528127+425547, 2MASXi J1528166+425638, 2MASXi J1529440+424640, 2MASXi J1529450+425506, 2MASXi J1530365+424302, ASK 245513.0, ASK 245544.0, ASK 245562.0, ASK 245568.0, CALIFA 938, CG 0728, CG 0737, CG 0743, CGCG 1526.4+4305, CGCG 1526.5+4306, CGCG 1528.0+4257, CGCG 1528.0+4305, CGCG 1528.9+4253, CGCG 222-011, CGCG 222-013, CGCG 222-016, CGCG 222-017, CGCG 222-019, CGPG 1526.5+4306 NED01, CGPG 1526.5+4306 NED02, ECO 04961, ECO 04962, ECO 04969, ECO 04970, ECO 04971, FBQS J152944.0+424640, GALEXASC J152812.69+425546.8 , GALEXASC J152816.74+425638.7 , GALEXASC J152944.41+424641.6 , GALEXASC J152945.01+425507.2 , GALEXASC J153036.58+424302.2 , HDCE 0908 NED001, HDCE 0908 NED002, HDCE 0908 NED003, HDCE 0908 NED004, HDCE 0908 NED005, I Zw 113 NOTES01, I Zw 113 NOTES02, IRAS 15264+4306, IRAS 15280+4305, IRAS 15288+4253, IRAS F15264+4306, IRAS F15280+4305, IRAS F15288+4253, ISOSS J15298+4254, KISSR 1958, KPAIR J1528+4255 NED01, KPAIR J1528+4255 NED02, LDCE 1129 NED001, LDCE 1129 NED002, LDCE 1129 NED003, LDCE 1129 NED004, LDCE 1129 NED005, MCG +07-32-011, MCG +07-32-013, MCG +07-32-016, MCG +07-32-017, MCG +07-32-019, Mr18:[BFW2006] 10490 NED03, Mr18:[BFW2006] 10490 NED04, Mr18:[BFW2006] 10490 NED06, Mr18:[BFW2006] 10490 NED07, Mr18:[BFW2006] 10490 NED08, Mr19:[BFW2006] 21435 NED02, Mr19:[BFW2006] 21435 NED03, Mr19:[BFW2006] 21435 NED05, Mr19:[BFW2006] 21435 NED06, Mr19:[BFW2006] 21435 NED07, Mr20:[BFW2006] 34166 NED01, Mr20:[BFW2006] 34166 NED02, Mr20:[BFW2006] 34166 NED04, Mr20:[BFW2006] 34166 NED05, Mr20:[BFW2006] 34166 NED06, NGC 5934, NGC 5935, NGC 5943, NGC 5945, NGC 5947, NGC5934, NGC5935, NGC5943, NGC5945, NGC5947, NPM1G +42.0416, NPM1G +43.0302, NPM1G +43.0303, NSA 043470, NSA 043476, NSA 043477, NSA 043481, NSA 043484, NVSS J152812+425548, PGC 055178, PGC 055183, PGC 055242, PGC 055243, PGC 055274, SDSS J152812.73+425547.6, SDSS J152812.74+425547.6, SDSS J152812.75+425547.5, SDSS J152812.76+425547.5, SDSS J152812.76+425547.6, SDSS J152812.77+425547.7, SDSS J152812.78+425547.7, SDSS J152816.69+425638.7, SDSS J152816.70+425638.7, SDSS J152816.71+425638.8, SDSS J152816.72+425638.6, SDSS J152944.10+424640.7, SDSS J152944.11+424640.6, SDSS J152944.11+424640.7, SDSS J152944.12+424640.7, SDSS J152944.99+425507.1, SDSS J152945.00+425507.1, SDSS J152945.01+425507.2, SDSS J152945.02+425507.1, SDSS J152945.02+425507.2, SDSS J153036.58+424301.7, SDSS J153036.59+424301.7, SDSS J153036.60+424301.7, SSTSL2 J152816.70+425638.5, UGC 09862, UGC 09870, UGC 09871, UGC 09877, USGC U704 NED01, USGC U704 NED02, USGC U704 NED03, USGC U704 NED05, USGC U704 NED06, UZC J152812.8+425548, UZC J152816.6+425637, UZC J152944.1+424641, UZC J152945.1+425507, UZC J153036.6+424301, WBL 569-001, WBL 569-003, WBL 572-002, [BFW2006] J232.05316+42.92987 , [BFW2006] J232.06956+42.94409 , [BFW2006] J232.43377+42.77797 , [BFW2006] J232.43749+42.91865 , [BFW2006] J232.65245+42.71715 , [DZ2015] 774-01, [DZ2015] 774-02, [DZ2015] 774-03, [DZ2015] 774-04, [GH2007a] 193, [H84a] 1526+431, [M98j] 245 NED01, [M98j] 245 NED02, [MGH2008] J152812.7+425547.7 , [MGH2008] J152816.7+425638.8 , [PJY2015] 587733409915797539 , [SLK2004] 1136, [TTL2012] 290769, [TTL2012] 290905, [TTL2012] 290932, [TTL2012] 290936, [TTL2012] 291040,